On Wed, Jun 19, 2013 at 3:21 PM, Mark Knecht <markkne...@gmail.com> wrote: > > Is 'using ACLs' one of those things that if you don't know then you > are not? I just run basic Gentoo here. All installs done as per the > install guide. I don't even use LVM or anything fancy. (Which is > likely part of why I'm having to reconfigure as much as I am but so be > it.)
Gentoo can potentially make use of them if you're using POSIX capabilities, but I think that has to be enabled by USE flag or FEATURE. I think you might also have to enable them in fstab (and the kernel as well, though that is likely enabled by default). Chances are you'd know if you were using them, and it would only apply to stuff installed by portage (generally binaries). Oh, and using POSIX capabilities is a good thing (less suid root binaries). One thing to mention - I'm not sure how much data you're talking about, but if it is a lot and downtime is a concern you could probably get creative and avoid some copying. You could copy the files onto an LVM vg, and then after your RAID is set up you could move the logical volume onto your RAID, which is an online operation. (Ie set up your USB drive as LVM, copy the files over, adjust your mounts so that the USB drive is mounted where you want the files, and at this point they're in production. Then get your RAID set up, add it to the volume group, and pvmove the USB drive so that it gets moved to your RAID. Then remove the USB drive from your volume group and you're in the final config, with no further need to adjust mountpoints since they're already pointed to LVM.) I've done a lot of messing around with online migrations of RAID and LVM - quite handy when you have lots of stuff like mythtv recordings that you don't want to have offline backups of. Rich
